Power Electronics Projects Ideas for Electrical Engineering Students

Power Electronics:

Power electronics refers to a subject in electrical engineering research that deals with the design, control, computation, and integration of nonlinear, time-varying energy processing electronic systems with fast dynamics. It is an application of solid-state electronics to control and conversion of electric power. There are many solid-state devices like Diode, Silicon controlled rectifier, Thyristor, TRIAC, Power MOSFET, etc.

Here we are listing out some interesting projects based on power electronics for engineering students.

Details of few Power Electronics based Projects

1. Industrial Power Control by Integral Cycle Switching without Generating Harmonics:

The AC power to loads is given through power electronic devices like thyristors. By controlling the switching of these power electronic devices, the AC power delivered to the load can be controlled. One of the ways is to delay the firing angle of the thyristor. However, this system generates harmonics. Another way is using integral cycle switching where one whole cycle or number of cycles of the AC signal given to the load is eliminated completely. This project designs a system to achieve the control of AC power to loads using the latter method.

Here a zero-crossing detector is used which delivers pulses at every zero crossings of the AC signal. These pulses are fed to the microcontroller. Based on the input from the pushbuttons, the microcontroller is programmed to eliminate the application of a certain number of pulses to the optoisolator which accordingly gives triggering pulses to the Thyristor to make it conduct so as to apply AC power to the load. For example, by eliminating the application of one pulse, one cycle of the AC signal is completely eliminated.

2. UPFC Related Display of LAG and LEAD Power Factor:

Generally, for any electrical load like a lamp, a choke is used in series. However, this introduces a lag in the current compared to the voltage and this leads to more consumption of electrical units. This can be compensated by improving the power factor. This is achieved by using a capacitive load in parallel with the inductive load to compensate for the lagging current and thus the power factor can be improved to achieve a value of unity. This project defines a way to calculate the power factor of the AC signal applied to the load and accordingly thyristors connected in back to back connection are used to bring capacitors across the inductive load.

Two zero crossing detectors are used- one to get zero-crossing pulses for the voltage signal and the other to get zero-crossing pulses for the current signal. These pulses are fed to the microcontroller and the time between the pulses is calculated. This time is proportional to the power factor. Thus the power factor value is displayed on the LCD display. As the current lags behind the voltage, the microcontroller gives appropriate signals to the OPTO isolators to drive the respective SCRs connected in back to back connection. A pair of back to back connected SCRs is used to bring each capacitor across the inductive load.

3. FACTS(Flexible AC transmission) by TSR(Thyristor Switched Reactor):

Flexible AC transmission is essential to achieve the delivery of a maximum amount of source power to the load. This is achieved by ensuring the power factor to be at unity. However, the presence of shunt capacitors or shunt inductors across the transmission line causes a change in the power factor. For instance, the presence of shunt capacitors amplifies the voltage and as a result, the voltage at the load is more than the source voltage. To compensate for this inductive loads are to be used which are switched using thyristors connected back to back. This project defines a way to achieve the same by using a Thyristor switched reactor to compensate for the capacitive load.

Two zero crossing detectors are used to produce pulses for every zero crossings of current signal and voltage signal respectively. The time difference between the applications of these pulses to the microcontroller is detected and the power factor proportional to this time difference is displayed on the LCD display. Based on this timing difference, the microcontroller accordingly delivers pulses to the OPTO- isolators to drive the back to back connected SCRs to bring the reactive load or the inductor in series with the load.

4. FACTS by SVC:

This project defines a way to achieve flexible AC transmission by using thyristor switched capacitors. The capacitors are connected in shunt across the load to compensate for the lagging power factor due to the presence of inductive load.

The zero-crossing detectors are used to produce pulses for every zero crossings of voltage and current signal respectively and these pulses are fed to the microcontroller. The time difference between the applications of these pulses is calculated and it is proportional to the power factor. As the power factor is less than unity, the microcontroller delivers pulses to each pair of optoisolator to trigger each back to connected SCRs to bring each capacitor across the load until the power factor reaches unity. The power factor value is displayed on the LCD.

Some More Projects

Space Vector Pulse Width Modulation:

Three-phase supply can be derived from single-phase supply by first converting the single-phase AC signal to DC and then converting this DC signal to a three-phase AC signal using MOSFET switches and bridge inverter.

Cyclo Converters using Thyristors:

This project defines a way to achieve the speed control of induction motor by supply AC voltage to the motor at three different frequencies at F, F/2, and F/3 where F is the fundamental frequency.

Dual Converter using Thyristors:

This project defines a way to achieve bidirectional rotation of the DC motor by providing dc voltage at both polarities. Here a dual converter using thyristors is developed. The speed of the motor is also controlled by controlled the voltage applied to the thyristors using the firing angel delay method.

Power Electronics Projects:

1. Silicon Power Electronic says:

Very helpful article. Thank you for taking the time and effort in composing and publishing this report. This post is very informative and very interesting also. Thanks to keep us informed with engineering details.
Silicon Power Electronic

2. Shalini says:

How to design a passive power filter

3. Tarun Agarwal says:

4. ajithparma says:

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I will revisit to see what further great information I can recieve here.

5. Aniket Khond says:

I want a solar based or renewable energy based project for electrical engineering

6. Girija cs says:

Hello sir,
Thank you

7. Priya says:

Madam i want mini project topics related to inverter or converter…i need with in one day please mamdam give me a one topices …i search lot of website i did not got topics until.so please help me mamdam..

8. Bhavana says:

hello sir,
Thank you

9. hema swaroop says:

hi sir,
currently iam doing my final year. i need power electronics based projects.
i need entire kit,neat and clean explanation, power point presentation and etc
whether you will provide all the above mentioned things??

10. s.jessy says:

sir plz give some powerelectronics based project list

11. ritu says:

I am pursuing ME.POWER ELECTRONICS AND DRIVES and i want to do converter based project using solar energy can u give me some guidance to start my project.

12. divya says:

i am current pursuing 3rd year eee i want best and small budget power electronic based mini project topics and complete informations could you help me

13. dhruv says:

Sir,
I’m currently pursuing M.Tech. I’m asked to design a “full bridge switching circuit” (subject is power electronics). Could you please help me find this circuit. Basically I have to design a control circuit of full bridge used to drive the power circuit. I’d be thankful for your help.

14. vidya shree says:

hi
i’am a student perusing my M.Tech in power electronics and in search of a research oriented project could you please guide me width some project ideas.
thank you.

15. sijo jose says: